Dryad was supposed to provide a way for running big-data jobs across clusters of Windows servers. It was designed to provide a platform for developers to build applications that can process large amounts of unstructured data. Just a month ago, Microsoft updated its near-final test build of Dryad.
But it now appears Microsoft is putting all its big-data eggs in the Hadoop framework basket. Microsoft officials said a month ago that Microsoft was working with HortonWorks to develop both a Windows Azure and a Windows Server distribution of Hadoop. A Community Technology Preview (CTP) of the Windows Azure version is due out before the end of this calendar year; the Windows Server test build of Hadoop is due some time in 2012.